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• W4324351614 abstract "This study develops an autonomous artificial intelligence (AI) agent to detect anomalies in traffic flow time series data, which can learn anomaly patterns from data without supervision, requiring no ground-truth labels for model training or knowledge of a threshold for anomaly definition. Specifically, our model is based on reinforcement learning, where an agent is built by a Long-Short-Term-Memory (LSTM) model and Q-learning algorithm to incorporate sequential information in time series data into policy optimization. The key contribution of our model is the development of a novel unsupervised reward learning algorithm that automatically learns the reward for an action taken by the agent based on the distribution of data, without requiring a manual specification of a reward function. To test the performance of our model, we conduct a comprehensive set of experimental study on both real-world data from Brisbane city, Australia, and synthetic data simulated according to the distribution of real-world data. We compare the performance of our model against three state-of-the-art models, and the experimental results show that our model outperforms the other models in different parameter settings, with around 90% precision, 80% recall, and 85% F1 score." @default.
• W4324351614 created "2023-03-16" @default.
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• W4324351614 date "2023-05-01" @default.
• W4324351614 modified "2023-09-30" @default.
• W4324351614 title "Autonomous anomaly detection on traffic flow time series with reinforcement learning" @default.
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• W4324351614 doi "https://doi.org/10.1016/j.trc.2023.104089" @default.
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